Thanks Tim,
For some reason, it didn't work when I corrected ABusinessEntity but I added [Serializable] to the
Entity class of the BizObj I was working with and hallelujah.

Don

>Hi Don,
>
>
>>Hi All,
>>
>> MM.Net v.4.0
>> Visual Studio 2010.
>> Web Application
>>
>>
>>I am trying to use the StoreEntityListInSession method for the first time and when I debug, I get the error:
>>
>>Type 'BizObjEntity' in Assembly 'BizObjProj', Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' is not marked as serializable.
>>
>>I'm calling it from the myButton_Click method of a button on a webform.
>>
>>I get no compile errors at all. Here is what it looks like:
>>
>>

>>        protected void btnMoveToNewYear_Click(object sender, EventArgs e)
>>        {
>>            AthlEligMovStudToNewYr movRes = new AthlEligMovStudToNewYr(sourceyear, targetyear);
>>            this.oAthlEligibility.EntityList = movRes.CarryForwardIsYes;    //this is an mmBindingList
>> 
>>            StoreEntityListInSession<AthlEligibilityEntity>(this.oAthlEligibility.EntityList, "CarryForwardIsYes");
>>
>>//Also, I have tried this with the same results:
>>
>>            StoreEntityListInSession<AthlEligibilityEntity>(movRes.CarryForwardIsYes, "CarryForwardIsYes");
>>        }
>>
>>

>>
>>Can anyone see what I'm missing?
>>
>>Thanks,
>>Don
>>
>>Ps. Also, if I've goofed up the posting of this message in any way, alert me. I'm not
>>finding Universal Thread to be intuitive or maybe it's just so powerful that it takes
>>a while to acclimate to.
>
>In the earlier version of MM which you started with it did not have the Serializable attribute on the ABusinessEntity class. That has been fixed, but yours probably doesn't have that. Just open the ABusinessEntity class file and add "Serializable right over the class definition. It needs to be surrounded with a square brackets and no quotes. Capitalize the S in Serializable.
>
>Update: A picture is worth a thousand words. Attached.
>
>That should fix your issue.
>Good luck
>Timothy